Pebble-mill.



c. P. BALL.

PBBBLB MILL.

APPLICATION FILED NOV. 15, 1910. A v l* i.

Patented Mar. 11, 1913.

Z SHEETS-SHEET 1.

G. F. BALL.

PBBBLE MILL.

APPLICATION FILED NOV. 15, 1910.

1,055,599, v Patented Mar.11,1913.

2 SHEETS-SHEET 2. l

11 f 715372615565: @venan CHARLES r. BALL, or` nrcniaom) BROOKLYN, NEW JEWELL.

l NEW YORK, ASSIGNOR T BALL & JEWELL, 0F -YORK, A FIRM COMP OSED OF CHARLES F. BALL AND HARRY A..

Panam-MILL.

- Specification of Letters latent.v Patented May, 11, 1913. application 'sued Nvembe'r' 15,1910. serial no. 592,486?

To all ifwhomt't may concern.' I Y Be it known that I, CHARLES F. BALL, a

- citizen of the United States, 'and resident of Richmond Hill, in the borough of Queens, in the city and State of New York, have invented a new and useful Improvement in Pebble-Mills, of which the following is a specification.

My invention relates to a pebble mill, the object being to provide a mill of this character which will feed. the material to be operated upon into the tumblingxbarrel and remove the treated material from the tumbling barrel in such quantities and with such regularity as will conduce to the best results.

A practical embodiment of the invention is represented in the accompanying drawings, in Which,- l

Figure 1 is a top plan view ofthe-tumbling barrel and its accessories. Fig.4 2 is aA vertical longitudinal section through the same. F ig. 3 is a vertical transverse section in the plane of the line AA ofFig. 2. Fig. 4 is a vertical transverse section in the plane of the line B-B of Fig. 2, and Fig. 5 is apartial vertical transverse section in the plane of the line C-C of Fig. 2.

' The tumbling barrel is denoted by 1. It is ofl cylindrical form and is provided preferably near one end, with a spur Wheel 2 fixed thereon, which spur wheel meshes with able source, not shown.

Aa pinion 3 on a drive shaft 4 which receives power'in any suitable manner from any suit- The barrel 1 is provided with a pair of annular tracks 5 and 6 which surroundit and which bear on rollers arranged in pairs -46 at the base, the members of one pair of rollers on which the track 5 bears being denoted lby 7 and 8 and the members of another pair on which the track 6 bears being denoted by 9 and l0. The tracks 5 and 6 means of wedge blocks 5* drawn" into position between the under side of the track and the outer face of the barrel 1, by means ot' draw bolts 6* fixed to the wedges and passing through stationary bands 7 riveted to the wall of the barrel. These rollers 7, 8, 9 and 10 are mounted in suitable bearings on bases denoted respectively by 11 and 12.

The tumbling barrel 1, at its 'receiving end is provided with narrow chambers, the outer one, denoted' by 13,bei`ng conveniently referred to as the receiving chamber,` and another adjacent to the receiving chamber of' the barrel by a diaphragm 15, and fromthe receiving chamber 13 by a diaphragm" 16. A dish shaped end cap 17 forms the end and peripheral walls of the receiving cham'- ber 13.- These chambers 13 and 14 are conveniently formed by providing the diaphragm plate 15 with a peripheral flange 18 forming the peripheral wall `of the feed chamber 14,' the said peripheral flange 18 terminating at one end in an outwardly projecting flange 19` and at the opposite end being projected beyond the face of the diaphragm 15 to form a flange 2G ada ted to overlap the wall of the barrel 1 or the purpose of riveting the flanged diaphragm to the end of the barrel 1. The dished cap, 17 is also provided with an outwardly projecting flange 21 and between these flanges 19 and 21, the outer edge of the diaphra In `16 is placed and secured in position gby through bolts 22. The dished end cap 17 is provided at its center with anopening fpr the ,reception of a tube 23, the said tube 23 forming a support for the feed hopper 24,

the neck 25 of '-'which extends obliquely downwardly across the interior ofthe tube 23 and opens into the receiving chamber 18'. A packing ring 26 is secured to the end cap 17 in proximity to the exterior of the tube 23, to close the joint between the two while permitting the barrel with its receiving and feed chambers to rotate freely around the ltube. The diaphragm 16 has openings 27, 28, located in the present instance near the outer edge of the diaphragm and-diametrically opposite one another for permitting the passage o material through from the receiving chamber 13 to the feed chamber 14. The diaphragm 15 has at its center an opening 29, from the opposite walls ot which, scoop-like blades 30 and 31 extend to the peripheral wall of the chamber 14. These blades 30 and 31 start from the wall of the opening 29, oblique to the longitudinal axis of the feed chamber 14, and gradually Wind as they curve outward toward its periphery, until. when they reach the periphery, they are in a lateral direction substantially parallel to the longitudinal axis of.

the receiving chamber, that is, from their inner ends to their outer ends, they start from a position oblique across the chamber and gradually approach a position directly across the chamber.

Art the opposite end of the tumbling barrel 1, there is provided a narrow discharge chamber 32, in the present instance by means of a flanged diaphragm provided Awith curved twisted blades` quite similar tothe blades 30, 31,011 the diaphragm 15 already described, the said diaphragm being denoted by andits discharge blades by 34, 35. Lilre the diaphragm 15, it is provided with a peripheral flange 36 which is projected to-overlap the end of the barrel 1 for riveting it thereto.y and also provided with an outwardly projecting liange 37 for bolting thereto an end cap 3S, the latter provided with a centrally located discharge tube 39. The diaphragm 33 is provided with one or more annular series of openings for the discharge of the treated material, two annular series of openings being in the present instance shown, the outer annular series being denoted by 40 and the inner annular series by 41. i

It is to be assumed that the tumbling barrel 1 is to be supplied wit-h the proper charge of pebbles for producing the scouring effect desired upon the rice or other grain being treated.

The feed blades 31, 32 and the discharge blades 34, as well as the peripheral f i lflanges 18 and 3G, are preferably formed integral with their respective diaphragms 15 and llo assist in crowding the material through'the openings 27, 28, in the diaphragm 1G, oblique plates 42, 43, are provided in the receiving chamber 13 and eX- tend from the rear edge of the respective openings 2T, 2S, obliquely forward to the nncr wall of the cap 17. The terms rear and forward are here' used having relation to the direction in which the barrel 1 s fed into the hopper 24 and passes through the neck of the hopper into the receiving chamber 13. F rom thence it passes through 'the opening 27 or 2S, as the one or the other approaches a posit-ion below the neck ofthe hopper during the rotation of the tumbling barrel, being crowded through the openin by the oblique plate 42 or 43, and is sooope up by one ofthe arms 81 or 30 next succeeding in rotation the opening through which the material passes into the feed chamber 14. Because of the curve and twist of the scoop arm and the rotation of the barrel, the material is gradually caused to travel toward the central opening 29 and through the opening into the barrel l.- The material after having been subjected to the action of the pebbles` is gradually discharged through the several openings of the series 40, 41, at the oppositeend' of the tumbling barrel 1, and by means of the curved, twisted scoop arms 34, 35, andthe turning of the barrel 1, is gradually caused to travel toward the discharge opening 34 and forced outward therethrough.V

The structure is one which is not liable to crack cr mash the kernels being treated and serves to feed the material uniformly to and discharge it uniformly from the barrel.

Vhat l claim is:

ln a machine ot' the character described, a tumbling barrel provided with a feed chamber at its end, and a feed blade extending from the central portion of the feed chamber outwardly toward its periphery and gradually changing its Obliquity to the longitudinal axis of the chamber in the lateral direction of the blade, the end portion of the blade toward the periphery acting as a scoop, while the end portion of the blade toward the central portion of the chamber `acts as a feed screw.

In testimony that I claim the foregoing as my invention, I have signed my name in presence'of two witnesses, this 11th day of November 1910.

CHARLES F. BALL. Vitnesses F. GEORGE BARRY, HENRY C. THlnME. 

